It's called the Great Blue Hole. Scuba divers and snorkelers have ... And so we know that this was a big, dry cave, and it was during a really prolific era on Earth, so there were probably lots ...

Declared a UNESCO World Heritage Site in 1996 – along with six other areas surrounding Belize's barrier reef – the Great Blue Hole remains one of the world's most distinguished scuba sites.

Belize’s Great Blue Hole, pictured here, is probably the most recognizable blue hole. The newly discovered blue hole off the ...

The Great Blue Hole, located off the coast of Belize, has long been a subject of interest for scientists. When divers finally reached its bottom, they discovered something quite shocking.